DSL configuration in 1841 Cisco router

Unanswered Question
Nov 2nd, 2008
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HI All,


I am having Zyxel P-660HW series ADSL router. ISP has configured the PPP type in that ADSL router with static IP. I want to configure the Static IP address in my Cisco 1841 router which is directly connected to ADSL ( Zyxel) router. I tried to configured the bridge mode in ADSL router and I configured the Static IP address in Cisco router but no luck. Please any one me out .


ADSL Router Configuration :


Menu 4 - Internet Access Setup


ISP's Name= test

Encapsulation= RFC 1483

Multiplexing= LLC-based

VPI #= 8

VCI #= 32

ATM QoS Type= UBR

Peak Cell Rate (PCR)= 0

Sustain Cell Rate (SCR)= 0

Maximum Burst Size (MBS)= 0

My Login= N/A

My Password= N/A

ENET ENCAP Gateway= N/A

IP Address Assignment= N/A

IP Address= N/A

Network Address Translation= None

Address Mapping Set= N/A


Press ENTER to Confirm or ESC to Cancel:


System Name= MyISP

Location= spain

Contact Person's Name= JDI

Domain Name= Johnsondiversey.com

Edit Dynamic DNS= No


Route IP= No

Bridge= Yes



Menu 11.1 - Remote Node Profile


Rem Node Name= test Route= None

Active= Yes Bridge= Yes


Encapsulation= RFC 1483 Edit IP/Bridge= No

Multiplexing= LLC-based Edit ATM Options= No

Service Name= N/A Edit Advance Options= N/A

Incoming: Telco Option:

Rem Login= N/A Allocated Budget(min)= N/A

Rem Password= N/A Period(hr)= N/A

Outgoing: Schedule Sets= N/A

My Login= N/A Nailed-Up Connection= N/A

My Password= N/A Session Options:

Authen= N/A Edit Filter Sets= No

Idle Timeout(sec)= N/A











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Giuseppe Larosa Sun, 11/02/2008 - 04:37
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Hello Thiru,


I think you should try to add IRB config to the RFC 1483 bridged mode.


bridge 1 protocol ieee

bridge 1 route ip

bridge 1 bridge ip


int fas0/0

no ip addr

bridge-group 1


int atm0

no ip address

no shut

int atm0.1 point-to-point

no ip addr

bridge-group 1

pvc 8/32

! for using LLC use aal5snap not aal5mux

enc aal5snap

!


int bvi1

desc L3 interface for bridge-group 1

ip address x.x.x y.y.y.y

no shut



this should work allowing bridging and to have an IP address at the same time


Hope to help

Giuseppe



thiru.vel10 Sun, 11/02/2008 - 19:10
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Hi Giuseppe ,


I am not using ATM interface, I want configure the bridge mode in Ztxel router and then I need to configure the IP address in Cisco router. Already I tried to configure the Bridge mode in ADSL router but its not working . please find the configuration


ISP's Name= test

Encapsulation= RFC 1483

Multiplexing= LLC-based

VPI #= 8

VCI #= 32

ATM QoS Type= UBR

Peak Cell Rate (PCR)= 0

Sustain Cell Rate (SCR)= 0

Maximum Burst Size (MBS)= 0

My Login= N/A

My Password= N/A

ENET ENCAP Gateway= N/A

IP Address Assignment= N/A

IP Address= N/A

Network Address Translation= None

Address Mapping Set= N/A


Giuseppe Larosa Mon, 11/03/2008 - 01:09
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Hello Thiru,

>> I want configure the bridge mode in Ztxel router

in this case it should be as easy as assigning an IP address to the LAN interface and using a default route


Hope to help

Giuseppe






Thiru,


If I can understand correctly you want to configure the zyxel router in bridge mode and the associated public ip on the cisco router.

Then you need to run the setup on zyxel router and change the mode to brdige and ofcourse check the VPI and VCI.I think it should be 1 and 32.


Now once you are through with that check the public ip with mask and gateway on a test machine and try to get to run the internet.You are now with public ip and can configure the 1841 router.In such type of setups the duplex speed mismatch may not allow the internet to work.Check on that part with your isp as on my experience auto on the interface from zyxel to cisco never detect the exact duplex speed.


Reg,

Sushil

thiru.vel10 Mon, 11/03/2008 - 20:37
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Hi Sushil,


Correct. I got the VPI and VCI details( 8 and 32) and Encap from ISP So in have configured the Zyxel router in bridge mode and I configured the IP address in Cisco router but no luck. For your reference I am pasting the configuration.


ZyXel Adsl router Configuration Details :


Sys general load

Sys general routeip off

Sys general bridge on

Sys general save

Wan node index 1

Wan node enable

Wan node encap 1483

Wan node mux llc

Wan node vpi 8

Wan node vci 32

Wan node routeip off

Wan node bridge on

Wan node nat none

Wan node wanip static 0.0.0.0

Wan node save



Cisco router Configuration;


interface FastEthernet0/0

description Adsl internet Modem

ip address *.*.*.*.*

duplex auto

speed auto

end


ip route 0.0.0.0 0.0.0.0.0 fastethernet0/0


Giuseppe Larosa Tue, 11/04/2008 - 02:04
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Hello Thiru and Sushil,

I think you need to verify the encapsulation because RFC1483 defines two types:

RFC 1483 routed mode: IP/AAL5/ATM

RFC 1483 bridged mode: EthernetFrame/LLC/SNAP/AAL5/ATM


you need to use rfc1483 bridged mode to have this setup to work


Hope to help

Giuseppe


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